Disable ProfileKeyedServices on import process by default.

chrome/browser/profiles/profile_keyed_base_factory.cc

Index: chrome/browser/profiles/profile_keyed_base_factory.cc
diff --git a/chrome/browser/profiles/profile_keyed_base_factory.cc b/chrome/browser/profiles/profile_keyed_base_factory.cc
index 8277f87372db1f76c06c7662041a777658c8b8fb..a9ea56036f50f12c10cde34a67a62ff9eac7bd96 100644
--- a/chrome/browser/profiles/profile_keyed_base_factory.cc
+++ b/chrome/browser/profiles/profile_keyed_base_factory.cc
@@ -4,10 +4,12 @@
 
 #include "chrome/browser/profiles/profile_keyed_base_factory.h"
 
+#include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/prefs/pref_registry_syncable.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/profiles/profile_manager.h"
 
 ProfileKeyedBaseFactory::ProfileKeyedBaseFactory(
     const char* name, ProfileDependencyManager* manager)
@@ -49,6 +51,14 @@ Profile* ProfileKeyedBaseFactory::GetProfileToUse(Profile* profile) {
     }
   }
 
+  // If this is the import process, most services are not created to avoid
+  // conflicts with non-shareable resources used by the same service running in
+  // the browser process.
+  if (ProfileManager::IsImportProcess(*CommandLine::ForCurrentProcess()) &&
+      ServiceIsNULLOnImportProcess()) {
+    return NULL;
+  }
+
   return profile;
 }
 
@@ -102,6 +112,10 @@ bool ProfileKeyedBaseFactory::ServiceIsNULLWhileTesting() const {
   return false;
 }
 
+bool ProfileKeyedBaseFactory::ServiceIsNULLOnImportProcess() const {
+  return true;
+}
+
 void ProfileKeyedBaseFactory::ProfileDestroyed(Profile* profile) {
   // While object destruction can be customized in ways where the object is
   // only dereferenced, this still must run on the UI thread.